Three novel acidic polysaccharide fractions(OFPP-1,OFPP-2,OFPP-3)with different m olecular weights(803.7,555.1 and 414.5 k Da)were isolated from the peeled Opuntia dillenii Haw.fruits by alkali-extraction,graded alcoh...Three novel acidic polysaccharide fractions(OFPP-1,OFPP-2,OFPP-3)with different m olecular weights(803.7,555.1 and 414.5 k Da)were isolated from the peeled Opuntia dillenii Haw.fruits by alkali-extraction,graded alcohol precipitation and column chromatography.Structural analysis indicated that OFPPs were pectic polysaccharides consisting of rhamnose,arabinose and galactose residues.The backbone of OFPP-1 consisted of a repeating unit→6-α-D-Galp A-(1→2)-α-L-Rhap-(1→with T-α-D-Galp A-(1→6)-α-D-Galp A-(1→4)-α-D-Glcp-(1→,T-β-D-Xylp-(1→6)-α-D-Galp A-(1→4)-α-D-Glcp-(1→or T-α-D-Galp A-(1→3)-α-L-Araf-(1→as the side chains.The backbone of OFPP-2 consisted of a disaccharide repeating unit→2)-α-L-Rhap-(1→4)-β-D-Galp A-(1→with T-β-L-Araf-(1→as the branches substituted at the O-4 position of→2,4)-α-LRhap-(1→.Whereas the backbone of OFPP-3 was→2,4)-α-L-Rhap-(1→2)-α-L-Rhap-(1→3)-β-L-Araf-(1→or→2,4)-α-L-Rhap-(1→2)-α-L-Rhap-(1→4)-β-D-Galp A-(1→,which was branched at the O-4 position of→2,4)-α-L-Rhap-(1→.Moreover,these three polysaccharide fractions could protect Huh-7 cells against H2O2-induced oxidative stress to different extents by decreasing the MDA content and increasing the SOD,CAT,GSH-Px activities and the GSH level in the Huh-7 cells.These results suggest that OFPPs have the potential to be used as natural antioxidants.展开更多
Objective: To assess the antidiabetic effect of Opuntia dillenii seed oil on rats with diabetes mellitus. Methods: A rat diabetes model was established by intraperitoneal injection of rats with 50 mg/kg streptozotocin...Objective: To assess the antidiabetic effect of Opuntia dillenii seed oil on rats with diabetes mellitus. Methods: A rat diabetes model was established by intraperitoneal injection of rats with 50 mg/kg streptozotocin. Thirty albino Wistar rats were divided into five groups: the diabetic control group and normal control group were treated only with distilled water, two diabetic groups received 1 and 2 m L/kg of oil per day, respectively, for 30 days and one diabetic group received 2 mg/kg of glibenclamide. In addition, blood glucose was determined weekly. Body weight, average daily food, water intake and urinary volume of each animal were determined before and after the treatment period. After the treatment period, hepatic glycogen was determined using the anthrone reagent, and glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid were estimated using common clinical diagnostic kits. Results: Oral intake of the oil at 1 and 2 m L/kg for the diabetic animals significantly diminished blood glucose, glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid, accompanied by a noticeable elevation in the amount of hepatic glycogen in comparison with the diabetic control group. Similarly, Opuntia dillenii seed oil significantly increased the food intake and decreased the urinary volume per day in treated rats of the same groups in comparison with the period before the treatment intervention and attenuated body weight loss in the diabetic rats. Moreover, this effect of the oil was dose dependent. On the other hand, the oil did not affect their need for water. Conclusions: The results show that Opuntia dillenii seed oil has a very important antidiabetic effect on streptozotocin-induced diabetic rats. Hence, we suggest it as a preventive control of diabetes mellitus.展开更多
Objective:To investigate the hepatoprotective effect of Opuntia dillenii seed oil(ODSO)on CCl_4 provoked liver injury in rat.Methods:Animals were treated orally with ODSO at a concentration of 2 mL/kg,once daily for o...Objective:To investigate the hepatoprotective effect of Opuntia dillenii seed oil(ODSO)on CCl_4 provoked liver injury in rat.Methods:Animals were treated orally with ODSO at a concentration of 2 mL/kg,once daily for one week before the first intraperitoneal injection of CCl_4,and thereafter the administration of the oil was continued for 7 days until the introduction of the second injection of CCl_4.Fourteen hours after the last dose of CCl_4,rats were sacrificed,and the relative liver weight,weight gain,alkaline phosphatase,aspartate amino transferase,alanine aminotransferase,direct bilirubin,total bilirubin,triglycerides,total cholesterol,very low density lipoprotein,low density lipoprotein,high density lipoprotein,plasmatic glucose,urea,creatinine,acid uric and malondialdehyde were determined.Results:The significant increase was found in relative liver weight and plasma levels of alanine aminotransferase,aspartate amino transferase,alkaline phosphatase,total bilirubin,direct bilirubin,triglycerides,very low-density lipoprotein,urea,uric acid and malondialdehyde.Likewise,the significant decrease was indicated in the weight gain and the level of glucose plasmatic,and high-density lipoprotein levels in CCl_4 produced liver injury in rats were re-established to normal levels when treated with ODSO.While,no change was observed in the total cholesterol,low-density lipoprotein and creatinine in all animals.Conclusions:We conclude that the ODSO has a protective effect on CCl_4-mediated liver injury.Hence,we suggest its inclusion as a preventive control of liver disorders.展开更多
Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids o...Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids of NMR and MS spectral analysis. Result Three newcompounds, together with 14 known compounds, were isolated form the 80% ethanolic extract of itsstems. Conclusion The three new compounds, opuntioside Ⅰ (2), 4-ethoxyl-6-hydroxymethyl-α-pyrone(3) and kaempferol 7-O-β-D-glucopyranosyl (1→4)-β-D-glucopyranoside (4), were characterized.展开更多
This study was performed in laboratory scale and consisted of the using of aqueous Opuntia dillenii solution for the clarification of very turbid surface water (Turbidities varying between 186 NTU and 418 NTU). This p...This study was performed in laboratory scale and consisted of the using of aqueous Opuntia dillenii solution for the clarification of very turbid surface water (Turbidities varying between 186 NTU and 418 NTU). This plant from Cactaceae family was used as a natural coagulant for the different clarification tests. The preliminary phytochemical Screening of the powder of this plant showed that it contains tanins, saponins and mucilages. Flocculation and coagulation tests showed that Opuntia dillenii can be used in highly turbid water treatment. The removal efficiency varied from 89% to 93% for the turbidity and suspended solids, and from 4% to 15% for the obvious color in water when we used the optimum values of this natural coagulant (1 mL to 10 mL). The successive addition of this natural coagulant and the lime, gave a better elimination of turbidity and suspended solids, and a good reduction for the color. The removal efficiency of the turbidity and suspended solids became more than 95% and the one of the color between 67% and 94%.展开更多
该文采用微波辅助法提取米邦塔仙人掌多糖,并与热回流提取方法进行比较。通过设计正交试验,得出优化的工艺条件:以水为提取剂,料液比1∶10(w/v),提取2次,每次提取3 m in,微波炉功率700 W,选用70%乙醇沉淀。微波提取粗多糖的得率和含量...该文采用微波辅助法提取米邦塔仙人掌多糖,并与热回流提取方法进行比较。通过设计正交试验,得出优化的工艺条件:以水为提取剂,料液比1∶10(w/v),提取2次,每次提取3 m in,微波炉功率700 W,选用70%乙醇沉淀。微波提取粗多糖的得率和含量分别为6.8%和8.5%,高于热回流提取粗多糖的得率4.7%和含量8.3%。微波提取不仅缩短了提取时间,降低提取剂用量,而且提高了仙人掌多糖得率。展开更多
目的分离、纯化具有降血糖作用的仙人掌多糖组分。方法经热水提取、乙醇沉淀、DEAE Sepharose fast flow离子交换色谱和Sephadex G系列凝胶滤过色谱纯化得到5种仙人掌多糖组分。醋酸纤维薄膜电泳检测多糖纯度,凝胶色谱测定相对分子质量...目的分离、纯化具有降血糖作用的仙人掌多糖组分。方法经热水提取、乙醇沉淀、DEAE Sepharose fast flow离子交换色谱和Sephadex G系列凝胶滤过色谱纯化得到5种仙人掌多糖组分。醋酸纤维薄膜电泳检测多糖纯度,凝胶色谱测定相对分子质量,高效液相色谱测定糖的组成。结果5种多糖都已达到电泳纯。它们的相对分子质量依次为2.0×103、1.0×106、4.0×103、9.2×105、5.0×103。ODP1由鼠李糖组成,ODP2可能由鼠李糖和葡萄糖组成,ODP4可能由鼠李糖和D-半乳糖组成。ODP3和ODP5分别由鼠李糖和一未知糖组分组成。结论仙人掌多糖的提取没有必要采用脱蛋白、脱色素步骤,本实验所提取的仙人掌多糖是均一的。展开更多
基金supported by the National Natural Science Foundation of China(No.31972977)。
文摘Three novel acidic polysaccharide fractions(OFPP-1,OFPP-2,OFPP-3)with different m olecular weights(803.7,555.1 and 414.5 k Da)were isolated from the peeled Opuntia dillenii Haw.fruits by alkali-extraction,graded alcohol precipitation and column chromatography.Structural analysis indicated that OFPPs were pectic polysaccharides consisting of rhamnose,arabinose and galactose residues.The backbone of OFPP-1 consisted of a repeating unit→6-α-D-Galp A-(1→2)-α-L-Rhap-(1→with T-α-D-Galp A-(1→6)-α-D-Galp A-(1→4)-α-D-Glcp-(1→,T-β-D-Xylp-(1→6)-α-D-Galp A-(1→4)-α-D-Glcp-(1→or T-α-D-Galp A-(1→3)-α-L-Araf-(1→as the side chains.The backbone of OFPP-2 consisted of a disaccharide repeating unit→2)-α-L-Rhap-(1→4)-β-D-Galp A-(1→with T-β-L-Araf-(1→as the branches substituted at the O-4 position of→2,4)-α-LRhap-(1→.Whereas the backbone of OFPP-3 was→2,4)-α-L-Rhap-(1→2)-α-L-Rhap-(1→3)-β-L-Araf-(1→or→2,4)-α-L-Rhap-(1→2)-α-L-Rhap-(1→4)-β-D-Galp A-(1→,which was branched at the O-4 position of→2,4)-α-L-Rhap-(1→.Moreover,these three polysaccharide fractions could protect Huh-7 cells against H2O2-induced oxidative stress to different extents by decreasing the MDA content and increasing the SOD,CAT,GSH-Px activities and the GSH level in the Huh-7 cells.These results suggest that OFPPs have the potential to be used as natural antioxidants.
文摘Objective: To assess the antidiabetic effect of Opuntia dillenii seed oil on rats with diabetes mellitus. Methods: A rat diabetes model was established by intraperitoneal injection of rats with 50 mg/kg streptozotocin. Thirty albino Wistar rats were divided into five groups: the diabetic control group and normal control group were treated only with distilled water, two diabetic groups received 1 and 2 m L/kg of oil per day, respectively, for 30 days and one diabetic group received 2 mg/kg of glibenclamide. In addition, blood glucose was determined weekly. Body weight, average daily food, water intake and urinary volume of each animal were determined before and after the treatment period. After the treatment period, hepatic glycogen was determined using the anthrone reagent, and glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid were estimated using common clinical diagnostic kits. Results: Oral intake of the oil at 1 and 2 m L/kg for the diabetic animals significantly diminished blood glucose, glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid, accompanied by a noticeable elevation in the amount of hepatic glycogen in comparison with the diabetic control group. Similarly, Opuntia dillenii seed oil significantly increased the food intake and decreased the urinary volume per day in treated rats of the same groups in comparison with the period before the treatment intervention and attenuated body weight loss in the diabetic rats. Moreover, this effect of the oil was dose dependent. On the other hand, the oil did not affect their need for water. Conclusions: The results show that Opuntia dillenii seed oil has a very important antidiabetic effect on streptozotocin-induced diabetic rats. Hence, we suggest it as a preventive control of diabetes mellitus.
文摘Objective:To investigate the hepatoprotective effect of Opuntia dillenii seed oil(ODSO)on CCl_4 provoked liver injury in rat.Methods:Animals were treated orally with ODSO at a concentration of 2 mL/kg,once daily for one week before the first intraperitoneal injection of CCl_4,and thereafter the administration of the oil was continued for 7 days until the introduction of the second injection of CCl_4.Fourteen hours after the last dose of CCl_4,rats were sacrificed,and the relative liver weight,weight gain,alkaline phosphatase,aspartate amino transferase,alanine aminotransferase,direct bilirubin,total bilirubin,triglycerides,total cholesterol,very low density lipoprotein,low density lipoprotein,high density lipoprotein,plasmatic glucose,urea,creatinine,acid uric and malondialdehyde were determined.Results:The significant increase was found in relative liver weight and plasma levels of alanine aminotransferase,aspartate amino transferase,alkaline phosphatase,total bilirubin,direct bilirubin,triglycerides,very low-density lipoprotein,urea,uric acid and malondialdehyde.Likewise,the significant decrease was indicated in the weight gain and the level of glucose plasmatic,and high-density lipoprotein levels in CCl_4 produced liver injury in rats were re-established to normal levels when treated with ODSO.While,no change was observed in the total cholesterol,low-density lipoprotein and creatinine in all animals.Conclusions:We conclude that the ODSO has a protective effect on CCl_4-mediated liver injury.Hence,we suggest its inclusion as a preventive control of liver disorders.
文摘Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids of NMR and MS spectral analysis. Result Three newcompounds, together with 14 known compounds, were isolated form the 80% ethanolic extract of itsstems. Conclusion The three new compounds, opuntioside Ⅰ (2), 4-ethoxyl-6-hydroxymethyl-α-pyrone(3) and kaempferol 7-O-β-D-glucopyranosyl (1→4)-β-D-glucopyranoside (4), were characterized.
文摘This study was performed in laboratory scale and consisted of the using of aqueous Opuntia dillenii solution for the clarification of very turbid surface water (Turbidities varying between 186 NTU and 418 NTU). This plant from Cactaceae family was used as a natural coagulant for the different clarification tests. The preliminary phytochemical Screening of the powder of this plant showed that it contains tanins, saponins and mucilages. Flocculation and coagulation tests showed that Opuntia dillenii can be used in highly turbid water treatment. The removal efficiency varied from 89% to 93% for the turbidity and suspended solids, and from 4% to 15% for the obvious color in water when we used the optimum values of this natural coagulant (1 mL to 10 mL). The successive addition of this natural coagulant and the lime, gave a better elimination of turbidity and suspended solids, and a good reduction for the color. The removal efficiency of the turbidity and suspended solids became more than 95% and the one of the color between 67% and 94%.
文摘该文采用微波辅助法提取米邦塔仙人掌多糖,并与热回流提取方法进行比较。通过设计正交试验,得出优化的工艺条件:以水为提取剂,料液比1∶10(w/v),提取2次,每次提取3 m in,微波炉功率700 W,选用70%乙醇沉淀。微波提取粗多糖的得率和含量分别为6.8%和8.5%,高于热回流提取粗多糖的得率4.7%和含量8.3%。微波提取不仅缩短了提取时间,降低提取剂用量,而且提高了仙人掌多糖得率。
文摘目的分离、纯化具有降血糖作用的仙人掌多糖组分。方法经热水提取、乙醇沉淀、DEAE Sepharose fast flow离子交换色谱和Sephadex G系列凝胶滤过色谱纯化得到5种仙人掌多糖组分。醋酸纤维薄膜电泳检测多糖纯度,凝胶色谱测定相对分子质量,高效液相色谱测定糖的组成。结果5种多糖都已达到电泳纯。它们的相对分子质量依次为2.0×103、1.0×106、4.0×103、9.2×105、5.0×103。ODP1由鼠李糖组成,ODP2可能由鼠李糖和葡萄糖组成,ODP4可能由鼠李糖和D-半乳糖组成。ODP3和ODP5分别由鼠李糖和一未知糖组分组成。结论仙人掌多糖的提取没有必要采用脱蛋白、脱色素步骤,本实验所提取的仙人掌多糖是均一的。
